Ophthalmic lens and mounting



June10, 1941. R UHLEMANN 2,244,926

OPHTHALMIC LENS AND MOUNTING Filed May 13, 1939 Patented June 10, 1941UNITED STATES PATENT OFFICER- 2,244,926 OPHTHALMIC LENS AND MOUNTINGRichard H. Uhlemann, Antioch, 111., assignor to Uhlemann Optical 00. ofIllinois, Chicago, 111., a corporation of Delaware Application May 13,1939, Serial No. 273,576

6 Claims.

My invention relates to an ophthalmic lens and mounting.

One of the objects of my invention is to provide an improved ophthalmiclens provided with means for connection with a strap in which a .minimumweakening of the edge of the lens is provided.

A further object is to provide such a, construction in which means areprovided to prevent both radial and edge relative slipping between thelens and mounting.

A further object is to provide such a construction in which theconnection is effected by providing a facial or surface groove in thelens.

A further object is to provide such a construction in which a connectionis effected between the lens and strap by means of a rod or pin slidableinto a groove in the surface of the lens.

A further object is to provide such a construction in which a connectionis effected by means of two nonparallel grooves.

A further object is to provide such a construction in which theconnection is efiected by grooves on opposite surfaces of the lens. Y

A further object is to provide a lens and mounting which may beconnected without the use of screws, solder, or similar means, and inwhich the lens and mounting will be held against both radial and sideslip.

A further object is to provide such a construction which will hold theparts securely connected without danger of breakage.

A further object is to provide such a construction which will be simpleand inexpensive to make and which can be assembled without. the use ofhighly skilled mechanics.

Further objects and advantages of the invention will be apparent fromthe description and claims.

In the drawing, in which several forms of my invention are shown aFigure 1 is a face view of .a lens and portions of the mountin Fig. 2 isa section on the line 2-2 of Figure 1;

Fig. 3 is a face view of a portion of the lens;

Fig. 4 is a view of the blank from which the strap is formed;

Fig. 5 is an exploded view showing 'the'strap and connecting pin;

Fig. 6 is a perspective view showing a spool having wire mounted thereonused in making the connecting pins or rods;

Fig. '7 is an exploded view of another form showing a face view of anedge of the lens and a face view of the blank from which the strap isformed;

Fig. 8 is an exploded view similar to Fig. 7 showing another form;

Fig. 9 is an exploded view similar to Fig. 8 showing another form;

Fig, 10 is a face view of another form showing a portion of the lens andstrap;

Fig. 11 is a section on the line I l--| l of Fig. 10;

Fig. 12 is a face View of the strap blank;

Fig. 13 is a face view of a lens and strap showing another form;

Fig. 14 is a section on the line I l-l4 of'Fig. 13;

Fig. 15 is a face view of the strap blank of Fig. 13;

Fig. 16 is a face view of a lens and strap showing another form;

Fig. 17 is a section on the line I'|ll of Fig.

16; and

Fig. 18 is a sectional view of another form of mounting.

Referring to the drawing in detail and first t Figs. 1 to 5, inclusive,the construction shown comprises an ophthalmic lens I, a strap 2 towhich the lens is secured, a nose-guard 3 mounted on the strap, atemple-supporting wire 4 mounted on the strap, and a portion of thebridge 5 secured to the strap.

In order to secure this lens to a strap, grooves 6 and 1 are provided inopposite faces of the .lens by means of any suitable apparatus such as agrinding wheel or the point of a drill. The strap is formed with aninwardly-extending bead 8 on one of its flanges and an inwardly-facingchannel 9 on the other flange; the inwardly-extending bead 8 is broughtinto registration with the groove 6 on one face of the lens, and thestrap is shifted to bring the bead 8 into the groove 6. This movement ispossible since, as shown in Fig. 3, the groove 6 is open at the edge ofthe lens. This action brings the groove 9 on the opposite flange intoregistration with the groove 1 on the opposite face of the lens. The rodor pin 10 is then slipped into place in the space provided by the groove9 in the strap and the registering groove 1 in the lens. The entrance tothe groove in the strap adjacent one end of the groove may be flaredsomewhat at II so as to facilitate the entrance of the pin. The pin 10may be of somewhat flexible material, such as wire, about one millimeterin diameter, to further facilitate this entrance. The pin may be formedsimply by breaking oif a piece from the end of a wire which may becoiled up on a spool, the wire being provided with suitably spacedweakened points to tion, due to the nonparallel arrangement of thegrooves on opposite sides of the lens, the lens and strap will be heldagainst separation, either by a relative slip movement edgewise betweenthe lens edge and strap or by a movement of the strap away from thecenter of the lens. It will also be seen that the lens is only slightlyweakened since the grooves are in the surface of the 7 lens and are inpractice only .014" deep.

Fig. 4, which shows the blank from which the strap is formed, shows therelative arrangement of the groove and bead in the'wing or .dangev portions of the strap, the strap being bent'along the dotted lines l2 tobring it into shown in Fig. 5.

The construction shown in Fig. 7 is similar to that just describedexcept that here provision the shape is made for the insertion of wireson both surfaces of the lens I.

In this form it is not necessary to have either of the nonparallelgrooves 6 or I run clear to the edge of the lens as the wires can beinserted into the space provided by the, registering opposing grooves onlens and strapwithout extending the grooves in the lens clear out to theedge. In this form both wings or flanges of the strap are provided withgrooves l3 on the inner faces of the flange.

. The construction shown in Fig. 8 is an exploded view similar to Fig. 7except that here the registering'grooves I4 and [5 in the lens and thecor responding grooves l6 and H in the strap are curvilinear, one groovebeing provided on each surface of the lens. The grooves I4 and I5 may beso positioned as not to be opposite each other, thus providing a minimumweakening of the lens.

The construction shown in Fig. 9 is similar to that ,shownin Fig. 8except that here the grooves l8 and [9 in the lens which cooperate withthe grooves and 2| in the strap are rectilinear. The construction shownin Figs 10, 11, and 12;i-s similar to that just described except thathere the edgewise slip between lens and strap is prevented by means of atongue 22, pressed inwardly from the back of the strap, which enters anotch 23 in the edge of the lens.

In all of the forms a cementitious material may be placed between theopposing surfaces of the strap and lens to hold the parts against anyslip whatever.

The construction shown in Figs. 13, 14, and 15 is in general similar tothat shown in Figs. 10, l1, and 12 except that here edgewise slip isprevented by means of aradially extending groove 23a in thelens whichcooperates with a radiallyand inwardly-extending bead 24 in the flangeof the strap. i The strap is held against movement away from the lens bymeans of the piece of j wire l0 inserted into the registering grooves inthe lens face and strap flange. The jaws of the strap may be taperedincross-sec-tion to give strength where needed.

. The construction shown in Figs. 16 and 1'7 is similar to that shown inFigs'lil, 11, and 12' except that here the strap 2 is held againstmovement away from the lens I by means of a metal ball 25 which may heslipped into the entrance provided by the registering. grooves in thelens and strap. I

g The construction shown in Fig. 18 is similar to those previouslydescribed except that here the facial groove 26 adjacent the edge of thelens be struck up from the material of the strap 2. In this form thecementitious material is applied to the edge of the lens and mounting,and the strap is slipped into place over the edge of the lens, thetongue 21 snapping down into the groove 26. In removing this, a sharpinstrument may be inserted underneath the spring tongue 21 to enablethis tongue to be pried outwardly to free it from the groove 26.

It will be seen. that in all of these forms a facial groove is providedin at least one face of the lens for cooperation with securing means forholding the strap and lens in place,

Further modificationswill be apparent to those skilled in the art and itis desired, therefore,

thatth'e invention be limited only by the scope of the appended claims.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. An ophthalmic lens having an elongated facial groove adjacent an edgethereof extending along the face of the lens at an oblique angle to theadjacent portion of the edge of the lens, a clip adjacent an edge of thelens having a securing portion provided with an elongated grooveopposite and registering with the elongated groove in the lens, andlongitudinally movable retaining means lying in said elongated groovesinsertable by movement longtudinally of the grooves when the clip is inposition on the lens.

2. An ophthalmic lens having an elongated facial groove adjacent an edgethereof extending along the face of the lens nonparallel to an adjacentportion of the edge of the lens, a clip adjacent an edge of the lenshaving a securing portion provided with an elongated groove opposite andregistering with the elongated groove in the lens, and longitudinallymovable retaining means lying in said elongated grooves insertable bymovement longitudinally of the grooves when the clip is in position onthe lens.

cooperates with a spring tongue 27 which may 3. An ophthalmic lenshaving elongated facial grooves adjacent an edge thereof each extendingalong a face of the lens, said grooves extending at an oblique angle toeach other, mounting means adjacent an edge of the lens having securingportions provided with elongated grooves opposite and registering withthe elongated grooves in the lens, and elongated remove.- bl-e retainingmeans lying in said elongated grooves insertable by movementlongitudinally of the grooves when the securing portions are in positionon the lens, one pair of registering grooves being nonparallel t0 theadjacent portion of the edge of the lens.

4. An ophthalmic lens having an elongated facial groove adjacent an edgethereof extending along the face of the lens at an oblique angle to theadjacent edgeof the lens, a clip adjacent an edge of the lens having asecuring portion provided with an elongated groove opposite andregistering with the elongated groove in the lens, and longitudinallymovable retaining means 1y ing in said elongated grooves insertable bymovement longitudinally of the grooves when the clip is in position onthe lens, said lens having a rece'ss opening .at an edge thereof andsaid clip having a projection for entering said recess at its edgeopening along a line oblique to the edge.

edge of the lens having a securing portion provided with an elongatedgroove opposite and registering with the elongated groove in the lens,and longitudinally movable retaining means lying in said elongatedgrooves insertable by movement longitudinally of the grooves when theclip is in position on the lens, said lens having a recess opening at anedge thereof and said clip having a projection for entering said recessat its edge opening along a line oblique to the edge of the lens to holdthe clip against slipping edgewise of the lens, said facial groove andrecess having portions lying in a common radial plane perpendicular to alens face.

6. An ophthalmic lens having an elongated facial groove adjacent an edgethereof extending along the face of the lens, a clip adjacent an edge ofthe lens having a securing portion provided with an elongated grooveopposite and registering with the elongated groove in the lens, and alongitudinally movable retaining pin lying in said elongated grooves,the said grooves having entrance openings large enough to enable theendwise insertion of the pin into the groove when the clip is inposition on the lens, said lens 10 having a recess opening at an edgethereof and said clip having a projection for entering said recess atits edge opening along a line oblique to the edge of the lens to holdthe clip against slipping edgewise of the lens, said oblique line be-RICHARD H. UHLEMANN.

